Home / 696,869.11-961,587.28-390,933.75

Finding the Fourth Proportional to 696,869.11, 961,587.28 and 390,933.75

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Solution

The fourth proportional to 696,869.11, 961,587.28 and 390,933.75 is: 539,436.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,869.11 : 961,587.28 = 390,933.75 : x
  2. Step 2: Convert to fraction form
    696,869.11/961,587.28 = 390,933.75/x
  3. Step 3: Cross multiply
    696,869.11x = 961,587.28 × 390,933.75
  4. Step 4: Simplify right side
    696,869.11x = 375,916,921,322.70
  5. Step 5: Solve for x
    x = 375,916,921,322.70/696,869.11
  6. Step 6: Final answer
    x = 539,436.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.